KR20000028270A - Method for recording and reproducing broadcasting program classified by grade in satellite broadcasting receiver - Google Patents

Abstract

PURPOSE: A method for recording and reproducing broadcasting program classified by grade in satellite broadcasting receiver is provided to previously prevent a reproduction of a recording tape in which a broadcasting program for an adult is recorded by recording a specific code value to a certain header of an ES when a received satellite broadcasting program is a broadcasting program with a no-minor seeing and hearing grade. CONSTITUTION: A receiver control unit identifies as to whether a certain input signal is inputted from a light receiving unit and controls an OSD processing unit to outputting a recording setting menu to a display unit(S100,S101). The receiver control unit receives a broadcasting program name, a time, a channel and a recording velocity and judges as to whether a received satellited broadcasting program is a no-minor seeing and hearing grade(S102). The receiver control unit records a specific code value to a

Description

How to record and play back broadcast programs in a satellite broadcasting receiver

The present invention relates to a method for recording and reproducing a broadcast program according to a grade in a satellite broadcast receiver. In particular, when recording a satellite broadcast program received from a satellite, if it is confirmed as a broadcast program of a minor viewing grade through service information, Recording and playing by grade of a broadcast program in a satellite broadcasting receiver which records and records a specific code value in a predetermined header of the ES so that the video tape cannot be viewed without knowing the password when executing the recording mode of the recorded video tape. (Method for recording and playing according to a grade of broadcasting program in Broadcasting Satellite Receiver).

In general, satellite broadcasting by a broadcasting satellite (BS) is a broadcast satellite located on a geostationary orbit around 35,000 to 36,000 km of the broadcast signal emitted from a terrestrial broadcasting station, relays it to the ground, and retransmits it to the ground. It refers to the type of broadcast that a signal is received in each home by using a satellite broadcast receiver.

Looking at the process of transmitting and receiving satellite broadcasting as follows.

First, when the satellite broadcasting station 10 emits a signal to the satellite 11 on the equatorial orbit around 35,000 to 36,000 km, the satellite 11 receives the signal and fires it again in a predetermined area. It is applied to the receiver 14 via the antenna 12 and the converter 13.

In addition, when a digital broadcast signal is applied to the channel unit 15 via the antenna 12 and the converter 13, the channel unit 15 selects a desired channel in the 1 GHz FM broadcast signal from the converter 13. After the selection, the selected analog broadcast signal is converted into a digital signal, demodulated and channel decoded and sent to the demultiplexer 16. At this time, the channel unit 15 includes a tuner, an A / D converter, and a link IC.

The demultiplexer 16 depacketizes a desired packet table among PID (Packet ID) information sent from the satellite 11. In this case, the pay signal is scrambled because the broadcast signal is scrambled. The demultiplexer 16 is provided after passing through a scrrambler 17.

On the other hand, when the depacketized signal is sent to the MPEG A / V decoder 18, the MPEG A / V decoder 18 decompresses the compressed digital signal.

The digital video signal thus released is converted into an analog signal through the NTSC encoder 19 and then output, and the digital audio signal is converted into an analog signal through the audio D / A converter 20 and then output. The output video and audio signals are provided to the TV receiver.

In addition, the receiver 14 includes a control unit 21 for controlling each part of the system, a RAM 22 and a ROM 23 storing various kinds of information, and a modem 24 for communicating with a broadcaster. And a smart card 24 in which the ID of the receiver subscriber is embedded.

On the other hand, in recent years, broadcasters divide the ratings of satellite broadcasting programs into various ratings, load them into service information table (EIT), and transmit them to each receiver through satellite. Examples of the rating information are as follows.

Y grade: All children can watch.

Y7 grade: Children age 7 and above can watch.

Grade G: People of all ages can watch.

PG grade: Can watch with parents.

14 Ratings: Children under 14 are not allowed to watch.

MA rating: Not available for children under 18 years of age.

The classification information classified as above is classified according to the contents of each broadcasting program and displayed in the service information of the broadcast signal. In the satellite broadcast receiver receiving the broadcast signal, the EIT (Event Information Table), which is the service information of the received broadcast signal, For example, if it is confirmed that the MA rating among the ratings, a screen asking for a password for viewing is displayed on the OSD screen of the satellite receiver. At this time, if the viewer does not know the password, the scrambled broadcast signal is not descrambled. I'm letting you.

However, when playing and watching a videotape recorded with a broadcast program received by a digital satellite broadcasting receiver, EIT, which is service information with grade information, is not recorded with a video / audio transport packet carrying a video / audio signal at the time of recording. Therefore, rating information is not recorded on the recorded video tape. For this reason, there is a problem that minors under the age of 18 can watch by playing the recorded tape even in a MA program that prohibits viewing.

The present invention is to solve the above problems, when recording a satellite broadcast program received from the satellite, if the service is confirmed to be a broadcast program of the minor viewing impaired rating through the service information by recording a specific code value in a predetermined header of the ES It is an object of the present invention to provide a method for recording and reproducing broadcast programs according to a grade of a broadcast program in a satellite broadcast receiver which makes it impossible to watch a videotape when the user does not know the password when recording and executing the play mode of the recorded videotape.

As a technical idea for achieving the object of the present invention, when a recording selection key of the remote control is input, the satellite broadcasting service information is checked to see if a broadcast program of a specific grade is included. A code recording process for recording a specific code value in a predetermined header of an MPEG video bit stream, and a playback key of recording means is input for reproducing the recorded broadcast program after recording the broadcast program of the satellite broadcast signal in which the code recording is completed. A code reading process for reading the code, a process of outputting a password input screen through an OSD screen when it is determined that the codes match each other by comparing whether the read code and the stored setting code match with each other; If it matches with the original password, the recording mode is activated by the recording means. An invention is presented that includes a process performed.

1 is a schematic block diagram showing a general satellite broadcasting receiver;

2 is a system block diagram of a satellite broadcast receiver for implementing the present invention;

3A and 3B are flowcharts illustrating an embodiment of a recording and reproducing method for each grade of a broadcast program according to the present invention.

<Explanation of symbols for main parts of drawing>

30: channel part 31: demultiplexer

32: control unit 33: MPEG A / V decoder

34: Audio D / A Converter 35: NTSC Encoder

36: audio signal processor 37: video signal processor

38: OSD processing section 39: CRT section

40: light receiver 41: remote control

42: DVCR control section 43: deck section

Hereinafter, with reference to the accompanying drawings with respect to the configuration and operation of an embodiment of the present invention will be described in detail.

As shown in FIG. 2, the satellite broadcast receiver for implementing the present invention receives a satellite broadcast signal, selects a desired channel among broadcast bands, converts the channel into a digital signal, and then decodes the channel once again. The demultiplexer 31 receives the channel decoded broadcast signal from the channel unit 30 to depacketize the compressed signal and depacketizes the compressed digital signal from the demultiplexer 31. An MPEG A / V decoder 33 is provided which decompresses and decompresses.

In addition, the satellite broadcasting receiver according to the present invention receives an uncompressed video digital signal from the MPEG A / V decoder 33 and converts it into an analog signal, and the MPEG A / V decoder 35. The audio and video signals, which have been subjected to the analog signal processing, through an audio D / A converter 34 which receives the decompressed audio digital signal from the audio signal and converts it into an analog signal, and the NTSC encoder 35 and the audio D / A converter 34. Audio and video signal processing units 36 and 37 for demodulating and signal processing, and a CRT unit for outputting video and audio signals processed through the audio / video signal processing units 36 and 37 and the OSD processing unit 38, respectively. 39 is provided.

In addition, the satellite broadcasting receiver according to the present invention includes a control unit 32 for controlling each part of the system, and a light receiving unit connected to an input terminal of the control unit 32 to receive an optical signal carrying a control code transmitted from the remote controller 41. 40.

In addition, a DVCR control unit 42 and a deck unit 43 are provided as a means for recording audio and video signals output from the audio and video signal processing units 36 and 37.

Now, a detailed operation of the present invention will be described with reference to the flowcharts of FIGS. 3A and 3B.

When the satellite broadcasting viewer turns on the power of the satellite broadcasting receiver and presses the recording key of the remote controller 45 to record the broadcast program he wants, the corresponding control code is converted into an optical signal and received by the light receiving unit 44. After receiving a predetermined input signal from the light receiver 44, the receiver controller 38 checks the input signal (S100 and S101), and then controls the OSD processor 34 to output a recording setting menu to the display 43.

At this time, when the satellite broadcaster sets the broadcast program name, time, channel, recording speed, etc. to be recorded in the recording setting menu by using the cursor of the remote controller 45, the receiver controller 32 receives the above data and is set to record. It is determined whether the satellite broadcast program is a minor viewing disability rating (S102).

In other words, the satellite broadcasting receiver receives the SI (System Information) provided by the broadcaster and analyzes the EIT (Event Information Table), which is the service information, in the state of constructing a channel map to analyze the rating information of the broadcast program selected by the viewer. You will be confirmed.

As a result of the above check, if the set satellite broadcasting program is set as a minor viewable grade, the receiver controller 32 controls the copylight identifier in the copy extension of the MPEG video elementary stream. Copyright Identifier) to record a specific code value (S103).

When the code recording process is completed, the receiver control unit 32 sends a recording start input signal to the DVCR control unit 42, and the DVCR control unit 32 controls the deck unit 43 to execute the recording mode. At this time, the video / audio transport packet of the satellite broadcast set recording is recorded (S104).

On the other hand, when the user turns on the power of the DVCR by using the remote controller 41 and inputs the playback key in order to play the recording tape in the state where the recording is completed, the DVCR controller 42 checks this (S105, S106) It is determined whether the broadcast program of the tape is a broadcast program that cannot be viewed by a minor (S107).

That is, the DVCR control unit 42 reads the specific code recorded in the Copyright Identifier in the Copyright Extension of the MPEG Video Elementary Stream to read the read code. The code is compared with the pre-stored configuration code.

As a result of the code comparison judgment, if the codes are found to be inconsistent with each other, the broadcaster can watch the minors and immediately enter the playback mode without confirming the password.

In addition, if it is determined that the codes match each other, it is a broadcast program of a grade that cannot be viewed by a minor, so that an OSD screen is output to display a password input screen (S108).

At this time, if the user inputs the password, it is checked whether it matches the stored unique password, and if the passwords match each other, a control signal is sent to the deck unit 43 to execute the playback mode (S109, S110).

Of course, if the input password does not match the unique password, the playback mode is not executed and the recorded tape cannot be viewed.

As can be seen from the above description, the present invention provides a satellite broadcast program received by the receiver control unit 32 when a user inputs a recording selection key of a remote controller to record a broadcast program containing rating information for each program from a satellite. When it is confirmed that the minor information is not included in the service information of the receiver control unit 32 records a specific code value in a predetermined header of the MPEG video bit stream of the satellite broadcast signal, and then recording the broadcast program, the user to record again When the recorded code is confirmed by the receiver control unit 32 when the play key of the DVCR is input to play the broadcast program, and the judge judges that the minor cannot view the child, the minor password is returned to the OSD screen. It is not before that adult broadcast program plays recorded tape recorded There is an effect that can be.

Claims (2)

If the recording selection key of the remote control is input to record the broadcast program containing the rating information of each broadcasting program from the satellite, the process of checking whether the satellite broadcasting service information includes the broadcasting program of a specific grade; A code recording process of recording a specific code value in a predetermined header of an MPEG video bit stream of the satellite broadcast signal when the current broadcast program of the satellite broadcast program is identified; Recording a broadcast program of the satellite broadcasting signal in which the code recording process is completed; A code reading process of reading the code when a play key of a recording unit is input to play the recorded broadcast program; A code comparison judgment step of comparing whether the read code is identical to the stored setting code; Displaying a password input screen through an OSD screen when it is determined that the codes match each other in the code comparison determination process; Entering a password confirms the password and confirms that it matches the stored unique password, Recording and reproducing method for each program grade of a satellite broadcasting receiver, characterized in that the reproducing mode is executed by the recording means if the passwords match. 2. The code recording process according to claim 1, wherein the code recording process comprises a code value specific to a copyright identifier in a copy extension of an MPEG video elementary stream under the control of control means. The recording and reproducing method for each program grade of the satellite broadcasting receiver characterized in that the recording.